Hi

I would like to know if someone can help me with this.  I would like restart the sketch below after a certain time period, but can't seem to figure out how to do so.  I'm able to restart it after key pressed, but not automatically after a certain time period. The sketch also saves to pdf after it stops.  How can I have it saved to different file names each time it restarts?

here's the sketch:


void setup() {
 
  size (1024, 768);
  beginRecord(PDF, "Sounds_01.pdf");
  smooth();
  noFill();
  background(#ffffff);
  frameRate(15);
 
  Ess.start(this);
  myInput=new AudioInput();
  myFFT=new FFT(512);
  myInput.start();

  for (int i=spektrum_min; i<spektrum_max; i++) {
  frequenzArray[i] = new frequenz();
  }
}

void draw() {
   
    ps=new SimplePostscript(this);
    ps.open("abstract01.ps", 0,0, width,height);
    ps.isOpen=true;
   
  if (speel) {

    myFFT.getSpectrum(myInput);
    for (int i=spektrum_min; i<spektrum_max; i++) {
    float temp=min(10, max(0, (myFFT.spectrum[i]*8000)));
    frequenzArray[i].teken(temp, i);
    }
  }
}

class frequenz {
  float x;
  float y;
  float x2;
  float y2;
 
  frequenz() {
    x = x_begin;
    y = y_begin;
  
  }

  void teken (float waarde, int range) {
   
    y2 = lengte * tan(radians((waarde)*100)+(spektrum_max * range))%6;
    x2 = lengte * tan(radians((waarde)*100)+(spektrum_min * range))%6;
   
    if (waarde > threshold) {
      doStroke(0,0,0,8);
      doLine (x, y, x+x2, y+y2);
   
    }
    else {
         
      doStroke(150,20,240,5);                       
      doLine (x, y, x+x2, y+y2);
     
    } 
   
    x = x+x2;
    y = y+y2;     
  
  }
}

void doStroke(float r, float g, float b, float w) {
  stroke(r,g,b);
  strokeWeight(w);
  if(ps.isOpen) ps.setrgb((int)r, (int)g, (int)b); ps.setlinewidth((int)w);
}
void doLine(float x,float y, float x2,float y2) {
  line(x,y,x2,y2);
  if(ps.isOpen) {
    ps.moveto(x,height-y);
    ps.lineto(x,height-y);
    ps.stroke();
}

}

void audioInputDone(AudioInput in) {
  speel = false;
  ps.close();
  ps.isOpen=false;
  endRecord();
}

public void stop() {
  Ess.stop();
  super.stop();

}